And here is another nice one. Again suppose your gmail id is kingjacc@gmail.com. Suppose you are using this id for some official use such as ‘customer feedback’or somehing. So now you can append any other word after your gmail id after a ‘+’ sign. So you can use the mail id ‘kingjacc+feedback@gmail.com‘ or ‘kingjacc+sports@gmail.com‘ or so. And if you want to forward to forward your mails addressed to ‘kingjacc+feedback@gmail.com‘ to another email id, if you need. You can configure this in the gmail settings > filters >